CVE-2025-7430 is a stored Cross-Site Scripting (XSS) vulnerability classified under CWE-79, affecting Zohocorp's ManageEngine Exchange Reporter Plus product, specifically versions 5723 and earlier. The vulnerability resides in the Folder Message Count and Size report feature, where user-supplied input is not properly sanitized or neutralized before being embedded in web pages generated by the application. This improper input handling allows an attacker with at least low-level privileges (PR:L) to inject malicious JavaScript code that is stored persistently on the server and executed in the context of other users' browsers when they access the affected report. The CVSS v3.1 base score is 7.3, indicating a high severity, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), and user interaction (UI:R). The impact affects confidentiality and integrity at a high level, but does not affect availability. Exploitation could lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim user. Although no known exploits are currently reported in the wild, the vulnerability's characteristics make it a significant risk for organizations using this product to monitor and report on Microsoft Exchange environments. The vulnerability was published in November 2025, with the initial reservation in July 2025. No official patches or mitigation links are currently provided by the vendor, indicating that organizations must be vigilant and apply mitigations proactively. The vulnerability's presence in a widely used enterprise reporting tool increases the potential attack surface, especially in environments where Exchange Reporter Plus is integrated with critical email infrastructure.

For European organizations, the impact of CVE-2025-7430 is substantial due to the widespread use of Microsoft Exchange and related management tools like ManageEngine Exchange Reporter Plus. Successful exploitation can lead to unauthorized disclosure of sensitive email metadata and reporting information, compromise of user sessions, and potential lateral movement within corporate networks. This can result in data breaches, loss of intellectual property, and disruption of business operations. The confidentiality and integrity of email reporting data are at risk, which can undermine trust in IT infrastructure monitoring and incident response capabilities. Organizations in sectors with strict data protection regulations, such as finance, healthcare, and government, face additional compliance risks and potential penalties under GDPR if the vulnerability is exploited. The lack of known exploits currently provides a window for proactive defense, but the ease of exploitation and high impact necessitate urgent remediation to prevent targeted attacks or opportunistic exploitation by threat actors.

1. Monitor vendor communications closely for official patches or updates addressing CVE-2025-7430 and apply them immediately upon release. 2. Until patches are available, restrict access to the Folder Message Count and Size report to trusted administrators only, minimizing exposure. 3. Implement Web Application Firewall (WAF) rules to detect and block suspicious input patterns targeting the vulnerable report interface. 4. Conduct thorough input validation and output encoding on all user-supplied data within the application, especially in reporting modules, to prevent script injection. 5. Educate users about the risks of interacting with untrusted links or reports and encourage cautious behavior to reduce the risk of triggering stored XSS payloads. 6. Regularly audit and review logs for unusual activity related to the Exchange Reporter Plus application. 7. Consider network segmentation to isolate management tools from general user networks, limiting the blast radius of potential exploitation. 8. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers accessing the application. 9. Use multi-factor authentication (MFA) for all users with access to the reporting tool to mitigate the impact of credential theft. 10. Prepare incident response plans specifically addressing web application attacks and XSS exploitation scenarios.